#include <uapi/linux/netfilter_ipv4.h>
-extern int ip_route_me_harder(struct sk_buff *skb, unsigned addr_type);
-extern __sum16 nf_ip_checksum(struct sk_buff *skb, unsigned int hook,
- unsigned int dataoff, u_int8_t protocol);
+int ip_route_me_harder(struct sk_buff *skb, unsigned addr_type);
+__sum16 nf_ip_checksum(struct sk_buff *skb, unsigned int hook,
+ unsigned int dataoff, u_int8_t protocol);
#endif /*__LINUX_IP_NETFILTER_H*/